110 lines
2.6 KiB
Rust
110 lines
2.6 KiB
Rust
// Copyright 2023 System76 <info@system76.com>
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// SPDX-License-Identifier: GPL-3.0-only
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mod binder;
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pub use binder::{AutoBind, Binder};
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mod insert;
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use cosmic::{Command, Element};
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use downcast_rs::{impl_downcast, Downcast};
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pub use insert::Insert;
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pub mod section;
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pub use section::Section;
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use derive_setters::Setters;
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use slotmap::SlotMap;
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use std::{borrow::Cow, future::Future, pin::Pin};
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slotmap::new_key_type! {
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/// The unique ID of a page.
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pub struct Entity;
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}
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/// A collection of sections which a page may be comprised of.
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pub type Content = Vec<section::Entity>;
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/// A request by a page to run a command in the background.
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pub type Task<Message> = Pin<Box<dyn Future<Output = Message> + Send>>;
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pub trait Page<Message: 'static>: Downcast {
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/// Information about the page
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fn info(&self) -> Info;
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#[must_use]
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fn content(
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&self,
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_sections: &mut SlotMap<section::Entity, Section<Message>>,
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) -> Option<Content> {
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None
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}
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#[must_use]
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fn context_drawer(&self) -> Option<Element<'_, Message>> {
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None
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}
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/// Response from a file chooser dialog request.
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fn file_chooser(&mut self, _selected: Vec<url::Url>) -> Command<Message> {
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Command::none()
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}
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#[must_use]
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#[allow(unused)]
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fn load(&self, page: crate::Entity) -> Option<crate::Task<Message>> {
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None
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}
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/// Emit a command when the page is left
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fn on_leave(&mut self) -> Command<Message> {
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Command::none()
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}
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}
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impl_downcast!(Page<Message>);
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/// Information about a page; including its title, icon, and description.
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#[derive(Setters)]
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#[must_use]
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pub struct Info {
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/// An identifier that is the same between application runs.
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#[setters(skip)]
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pub id: Cow<'static, str>,
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/// The icon associated with the page.
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#[setters(skip)]
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pub icon_name: Cow<'static, str>,
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/// The title of the page.
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#[setters(into)]
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pub title: String,
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/// A description of the page.
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#[setters(into)]
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pub description: String,
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/// The parent of the page.
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#[setters(strip_option)]
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pub parent: Option<Entity>,
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}
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impl Info {
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pub fn new(id: impl Into<Cow<'static, str>>, icon_name: impl Into<Cow<'static, str>>) -> Self {
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Self {
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title: String::new(),
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icon_name: icon_name.into(),
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id: id.into(),
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description: String::new(),
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parent: None,
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}
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}
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}
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#[macro_export]
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macro_rules! update {
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($binder:expr, $message:expr, $page:ty) => {{
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if let Some(page) = $binder.page_mut::<$page>() {
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page.update($message);
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}
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}};
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}
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